公开(公告)号：US20210372051A1

公开(公告)日：2021-12-02

申请号：US17299988

申请日：2019-12-20

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Katja Lyytikäinen ,  Gisela Cunha ,  Kaj Backfolk

IPC: D21H11/18 ,  D21H11/20 ,  D21H17/66 ,  D21H23/46

Abstract: The present invention relates to a method for preparing a surface-treated fibrous material comprising phosphorylated nanocellulose, in which a fibrous material is surface treated with a solution comprising at least one multivalent metal ion followed by drying and post-curing to improve the barrier properties of the material. Fibrous materials as such are also provided.

公开(公告)号：US11155698B2

公开(公告)日：2021-10-26

申请号：US16314592

申请日：2017-06-27

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Esa Saukkonen ,  Kaj Backfolk

IPC: C08L1/02 ,  D21H11/18 ,  C09D101/02 ,  F26B13/00 ,  D21F11/00 ,  C08J5/18 ,  C08K5/00

Abstract: The present invention relates to a method for the production of a film comprising microfibrillated cellulose, wherein the method comprises the steps of; providing a suspension comprising microfibrillated cellulose, applying the suspension on a substrate to form a fibrous web, wherein the web has a first and a second side, conducting the web to a contact drying equipment wherein the first side of said web is in direct contact with of the contact drying equipment at a temperature above 100° C. whereby the web is at least partly dried forming a film. The invention also relates to a film produced according to the method.

公开(公告)号：US11078626B2

公开(公告)日：2021-08-03

申请号：US15309286

申请日：2015-05-06

Applicant: STORA ENSO OYJ

Inventor： Kaj Backfolk

IPC: D21H13/12 ,  D21H17/70 ,  D21H13/14 ,  D21H13/24 ,  D21H17/35 ,  D21H17/53 ,  D21H17/00 ,  D21H17/67 ,  D21H17/37 ,  D21H17/28

Abstract: A method for forming a thermoplastic composite material in a papermaking machine, wherein the method comprises the steps of: forming an aqueous fiber material suspension; bringing said fiber suspension in contact with at least one additive, said additive being introduced into said fiber suspension, whereby said additive reacts to form a precipitation product onto or into the fibers, thereby forming an intermediate suspension, introducing, after the formation of the intermediate suspension, a plastic material into said intermediate suspension, thereby forming a plastic fiber composite suspension.

公开(公告)号：US20210214896A1

公开(公告)日：2021-07-15

申请号：US17056235

申请日：2019-05-14

Applicant: Stora Enso OYJ

Inventor： Tuula Sokka ,  Kaj Backfolk

IPC: D21H21/30 ,  C09D5/22 ,  C09D5/00 ,  C09D125/14 ,  C09D133/06 ,  C09D7/63 ,  C09D7/41 ,  C09D7/61 ,  D21H19/58 ,  D21H19/38 ,  D21H19/40 ,  D21H19/42 ,  D21H19/82

Abstract: The present invention relates to a coating composition for coating of paper or paperboard, said composition comprising: a pigment, a binder, an optical brightening agent (OBA), a colorant, and a sugar alcohol, and to paper or paperboard coated with at least one layer of the coating composition. The present invention further relates to a method for preparing said coating composition and to an OBA premix useful in the method of preparing the coating composition, said premix comprising an OBA, a sugar alcohol, and optionally a colorant, wherein the OBA and sugar alcohol together make up at least 10% by weight, preferably at least 20% by weight, based on the total weight of solids in the premix.

公开(公告)号：US11001969B2

公开(公告)日：2021-05-11

申请号：US16316790

申请日：2017-07-03

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Kirsi Partti-Pellinen ,  Simo Siitonen

IPC: D21F11/00 ,  D21H17/28 ,  D21H21/36 ,  D21H21/56 ,  D21H19/22

Abstract: The present invention relates to a new process for creating foam in a process for manufacturing a paper or board product. According to the present invention, certain types of antimicrobial starch is used in the creation of the foam.

公开(公告)号：US20200239652A1

公开(公告)日：2020-07-30

申请号：US16757093

申请日：2018-10-17

Applicant: Stora Enso OYJ

Inventor： Esa Saukkonen ,  Isto Heiskanen ,  Kaj Backfolk ,  Katja Lyytikäinen

IPC: C08J5/18 ,  D21H11/18 ,  D21H11/20 ,  D21H17/00 ,  D21H17/05 ,  D21H19/34 ,  D21H19/52 ,  C12N9/42 ,  C12N9/24

Abstract: The present invention relates to a method for manufacturing a film comprising microfibrillated cellulose wherein the method comprises the steps of; providing a suspension comprising a microfibrillated cellulose, adding an enzyme to the suspension, mixing the enzyme with the suspension to form a mixture, applying said mixture to a wire to form a fibrous web and drying said web to form said film. The present invention further relates to a film comprising microfibrillated cellulose having good barrier properties.

公开(公告)号：US20200171796A1

公开(公告)日：2020-06-04

申请号：US16500033

申请日：2018-03-28

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen ,  Jukka Kankkunen ,  Ville Ribu ,  Kimmo Nevalainen

IPC: B32B15/085 ,  B65D65/40 ,  B65D65/42 ,  B32B15/20 ,  B32B27/10 ,  D21H27/10 ,  D21H19/04 ,  D21H19/22 ,  D21H19/84 ,  D21H19/82 ,  D21H11/18 ,  C08J5/18

Abstract: The present invention is directed to a packaging material comprising a layer of microfibrillated cellulose (MFC) and an aluminum layer having a thickness of 0.1-20 μm, wherein the layer comprising MFC and/or the aluminum layer has been laminated or extrusion coated on at least one side with a thermoplastic polymer and wherein the amount of aluminum is sufficient to make the packaging material heat sealable by induction. The MFC layer contains at least 60% by weight of microfibrillated cellulose.

公开(公告)号：US20200056333A1

公开(公告)日：2020-02-20

申请号：US16345982

申请日：2017-10-26

Applicant: Stora Enso OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Esa Saukkonen

IPC: D21H19/34 ,  D21H23/50 ,  D21H27/10 ,  D21J1/08

Abstract: The present invention relates to a new process for providing a coating layer on a moulded article comprising fibers. In the present invention, a coating dispersion is prepared that comprises microfibrillated cellulose (MFC), a slip aid and at least one hydrocolloid.

公开(公告)号：US10240288B2

公开(公告)日：2019-03-26

申请号：US14758708

申请日：2013-12-30

Applicant: Stora Enso OYJ

Inventor： Isto Heiskanen ,  Henri Kastinen ,  Anna Kauppi ,  Jukka Kankkunen ,  Lars Axrup ,  Cecilia Land Hensdal ,  Heidi Saxell ,  Kaj Backfolk

IPC: D21C9/00 ,  D21H11/18 ,  D21H17/00 ,  D21H11/04 ,  C08B15/08 ,  C08L1/04 ,  D21D1/20

Abstract: The invention relates to methods of producing microfibrillated cellulose (MFC). According to the invention a fibrous pulp suspension is fibrillated mechanically at a consistency of less than 12.5%, dewatered to raise the consistency of the fibrillated suspension to at least 12.5%, and then subjected in the dewatered condition to further fibrillation. Alternatively an initially fibrillated fibrous pulp suspension may be dewatered and fibrillated in the dewatered condition, after which these dewatering and fibrillating steps are repeated one or more times so that pulp consistency is increased for each fibrillation step. The goals of raising the consistency between subsequent fibrillations are energy saving and an increased aspect ratio in MFC. The invention even comprises uses of the MFC product, e.g. as an additive for papermaking furnish or injection molded plastic composites.

公开(公告)号：US20180355248A1

公开(公告)日：2018-12-13

申请号：US15779158

申请日：2016-11-25

Applicant: STORA ENSO OYJ

Inventor： Kaj Backfolk ,  Isto Heiskanen ,  Carl-Mikael Tag ,  Ville Ribu

IPC: C09K17/52 ,  C05G3/02 ,  C05G3/04 ,  D21H15/10 ,  D21H21/36 ,  D21H21/28 ,  D21H17/67 ,  D21H19/52 ,  A01G13/02

CPC classification number: C09K17/52 ,  A01G13/0275 ,  C05G3/02 ,  C05G3/04 ,  D21H11/18 ,  D21H15/10 ,  D21H17/67 ,  D21H19/34 ,  D21H19/52 ,  D21H21/16 ,  D21H21/28 ,  D21H21/36 ,  D21H27/30

Abstract: The present invention relates to a ground cover in the form of a mulch, comprising a microfibrillated polysaccharide. Also methods for its manufacture and use thereof are disclosed.